Indeed, recovery rate for anyone who has an injury is different for each person. The strategy that I took on my road to recovery is to incrementally push myself towards the healing direction. I knew that if I did certain activities at a certain pace, then raise it only after I reached a comfortable level, I would recover a lot faster than if I did nothing for the longest time.

However, in the beginning, a few weeks or even a few months after the concussion, I did absolutely nothing (or very little if anything). I gave myself that allowance. You have to give yourself that allowance.

But once I had the motivation for recovery, I started to do "normal" things in small bits. For instance:

1. Play video games for a short period of time in "sessions". Increase the time incrementally to increase cognition;
2. Ride my bicycle - I rode indoors for 10 minutes up to 30 minutes or more until I felt comfortable again that my brain can handle physical movements. Then I rode outdoors, starting again from smaller timed sessions to larger ones as recovery progressed.
3. Read books - even reading was a chore. Again, used the same approach there. Read for 5 minutes, increase each time.

Do this with all activities you normally do and before you know it, you're not thinking about doing it.

It's also important to know when to back off and make yourself rest from your efforts. Take longer rest periods if you have to.

Hope this helps.